Improvement in cistern water-filters



. NrrEnS'rATES HUGHAGARTER ANDJOHN A. J HU r R Ys, OF SPRINGFIELD, 01110.

Specification forming part Letters Patent No. 173,268,. dated February 8, 1876; application filed .1" October-22,1875 v To all whom it may concern:

Be it known that we, HUGH CARTER and JoHN A. HUMPHREYS, both of. the city of constructed in the cistern, into which the water is admitted through a filteringpartitionwall, the water thus filtered becomes itself offensive in a short time, and wholly unfit for domestic purposes. The cleansing of these fixed filters occasions much trouble and expense, as the entire cistern must be emptied of its contents.

The object of our invention is to obviate this trouble and expense by the construction of a cheap, compact, portable filter, easily introduced and readily removed for cleansing, and which will always afford a supply of fresh- I 1y filtered and deodorized water.

Our filter may be set on.the bottom of the cistern or suspended a little above it, as pre ferred. Itis connected with the pump by having the pipe of thelatterlead down through its stand; pipe to the reservoir, or the pump may be directly connected with the stand-pipe by a screw or soldered joint. We prefer having the pipe .from the pump separate from the stand-pipe. In case the filter is suspended the top of the stand-pipe is flanged, to be attached at the topof the cistern. a

Figure 1 is a side elevation of our improved v portable water-filter for cisterns. Through the broken section the interior parts are visible.

' 'Fig. 2 is an inside view of the filter-case. Fig.

3 is a view of the perforated bottom of the reservoir.

A is the reservoir, which is supported upon legs 12 b in the middle of the case B, its bottombeing above the bottom plate sufiiciently toleave a space between them, which is filled with the filtering material. The reservoir, stand-pipe, and case are entirely made of galvanized iron. I romthe top of reservoir A extends the stand-pipe a to a height a little above-"the overflow or eductionpipe of the cistern.

ing material animal charcoal (pulverized) is used for the purpose. Case B, which is shown without its cap in Fig. 2, has a partition, G, in it about half-way between its outside shell and the reservoir A, dividing it into two sepasons, we make the case B about eighteen' inches diameter and about eight inches high. For this sized case the reservoir is about eight inches diameter and about two feet I highthe stand.'- pipe according to depth of the cistern from the point of overflow.

c c 0 are the inlet-holes near the bottom of the case B. They extend entirely around the case, and are made small enough to prevent floating substances from entering them.

In the bottom of the reservoirA a large num- 1 bor of holes, a a, are made to admit the filtered water into it.

than holes 0 coin the outside case. (See Fig.

3.) The dotted circular line in'Fig. 2 shows the relative position occupied by the reservoir A. A is a cap or cover of case B. This is made with a hole in it for the reception of the reservoir A, which passes down through it. It fits over the top of the case in the manner of a blacking-box lid.

In charging the filter the reservoir A is placed in its position in the middle of case B, and its legs secured to the bottom plate by screws or otherwise. is filled into the case, around and under the reservoir, until the entire case is full to the top, the spaces d and 0 being tightly packed. The cover A is then placed over the top of the case and fitted down close, after which the reservoir and cover or cap are soldered firmly together where they unite on the top. A

The case B (see Fig. 2) contains the filter- These are much smaller The powdered charcoal water-tight packing or cementmay be used for thejoint of the capA and case B, or they may be soldered together. The filter is now let down into the middle of the cistern, and the pipe of the pump inserted through stand-pipe a till it reaches the reservoir A. The water finds its way through holes '0 c 0, through the charcoal in (I, over the top of G, and down 'voir by the pump, it is set in motion from the cistern to the filter in the manner shown.

We disclaim the use of charcoal as a filter in g medium or deodorizer.

What we claim as our invention isl. A water-filter in which the reservoir is placed in the'middle of the filtering-case, is I supported above the bottom of the same by legs ortheireqnivalents, and, extending above it, supports a stand-pipe for a pump for operatingsaid filter, substantially as and for the "purpose set forth.

2. We claim case B, with its partition 0 and compartments d and e, and cap A, for the pur pose set forth.

3. In combination with a central and upward-extending reservoir, A,'witl1 its standpipe at, we claim the filter-case B, with its partition O, compartments d and e, and cap A, substantially as hereinbet'ore set forth, for the purpose specified.

. HUGH CARTER.

JOHN A. HUMPHREYS. Attest:

THOMAS STAPLEFORD, B.- G. CONVERSE; 

